Naturally, if you see wallpapers of a game, you'd expect that the wallpapers contain the content of the game. So, yeah, use OpenArena maps. Players need to know what they get with OA, rather than what they have to find to use with OA.

A suggestion would also be to add the OA logo in a corner of the wallper(usually top left or top right). Not bottom as this is covered by the taskbar on windows. But then again the top and bottom are usually covered by GNOME on Linux. The best thing is to distance the logo from the top or bottom atleast 50 or more pixels which should cover most taskbars(or whatever they are called) on Linux and Windows. Or place it at center from the left or right side. Don't forget to write "OpenArena" beneath the logo so that any innocent bystander could figure out what game it is.

Naturally, if you see wallpapers of a game, you'd expect that the wallpapers contain the content of the game. So, yeah, use OpenArena maps. Players need to know what they get with OA, rather than what they have to find to use with OA.

A suggestion would also be to add the OA logo in a corner of the wallper(usually top left or top right). Not bottom as this is covered by the taskbar on windows. But then again the top and bottom are usually covered by GNOME on Linux. The best thing is to distance the logo from the top or bottom atleast 50 or more pixels which should cover most taskbars(or whatever they are called) on Linux and Windows. Or place it at center from the left or right side. Don't forget to write "OpenArena" beneath the logo so that any innocent bystander could figure out what game it is.